Build a bit flag by checking whether values are NA
bf_na(x, test, pos = NULL, na.val = NULL, description = NULL, registry = NULL)
data.frame(1)
the table that contains
test
.
character(1)
the column in x
that is
checked for NA values.
integerish(.)
the position(s) in the bitfield that
should be set.
character(1)
optional value that should be
used to substitute NA values in the input data.
character(.)
optional description that
should be used instead of the default function-specific description. This
description is used in the registry legend, so it should have as many
entries as there will be entries per the respective flag in the legend (two
for a binary flag, as many as there are cases for a cases flag and one for
count or numeric flags).
registry(1)
a bitfield registry that has
been defined with bf_registry
; if it's undefined, an empty
registry will be defined on-the-fly.
an object of class 'registry' with the additional flag defined here.
bf_na(x = tbl_bityield, test = "y")
#> width 1
#> flags 1 -
#>
#> pos encoding typecol
#> 1 0.0.1/0 na y